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6. Name the following ions

(a) Al3+ Aluminum III    
(b) Ca+ Calcium         
(c) Br- Bromine         
(d) S2-  Sulfide
(e) SO4 2-  Sulphate
(f) PO43- Phosphate 

7. Write the chemical formula for each of the following ionic compounds

(a) Beryllium oxide BeO
(b) Rubidium bromide   RbBr 
(c) Barium hydroxide Ba(OH)2
(d) Ammonium Iodide NH4I
(e) Magnesium Phosphate MgPO4
(f) Iron(III) Oxide Fe2O3
(g) Copper(I) Sulphate Cu2SO4   
(h) Chromium (III) Phosphate CrPO4

8. Write the chemical name of each the following ionic compounds  

(a) ZnCL2 - Zinc (II) Chloride  
(b) CaS - Calcium Sulphide     
(c) K2SO4 - Potassium Sulfate  
(d) NH4NO3 - Ammonium Nitrite  
(e) Sr3(PO4)2 - Strontium (II) Sulphate
(f) AuCL3 - Gold Chloride
(g) Ni2S3 - Nickel (III) Sulphate
(h) PbF4 - Lead (IV) Fluoride